clk struggles to start??

[leemanuel]

HI i have a 2001 clk 320 convertible, had an odd problme happen to me twice now....

after 2 long trips 100 miles plus i do what i need to go back to the car and it struggles to start?? eventualy fires up after say 10 goes, then next morning still does the same and when it starts its rough and sound slike it may cut out, if i press the excelerator nothing changes then all of a sunden it clears and i can drive fine??

could it be dirt in the injectors? would redex help? any other suggestions??

 

[hbltd]

Crankshaft sensor??

 

[Kevin Gardiner]

sounds like fuel pressure, when was the filter last changed?

 

[leemanuel]

Hi,

the car has started doing it more often now - if i hold my foot on the accelerator and turn it over it starts but makes a slight backfire noise....

will have a go at cjhanging the fuel filter in the morning...........

 

[leemanuel]

ok have put the new fuel filter in today..... car seemd to run fine and start up all as it should do, didnt take on a long run, just been out and it took 2 turns to fire up..

anyone any idea what else i could try? basicaly the car runs spot on just every so often when you start up it just turns over and wont fire up
car is a 2001 and covered 54k

 

[leemanuel]

Grrrrrrr

ok have put a new air mas sensor on the car, changed the fuel filter and the car seems loads better.

still though when i start the car from cold or when it has been stood an hour or so it struggles to start a little and the odd time it coughs and splutters until it actualy fires up???

anyone suggest anything else other than what i have done already??

 

[Xtractorfan]

Dodgy lead, coil pack, even crankshaft sensor, may need a session on the old star diagnostic

 

[leemanuel]

cool, so the diagnostic would show whats the issue then?
shame thought it may have been a quick fix diy

 

[television]

If you have a meter you can measure the CPS it should be 1k ohms when good, and into the 100k ohms when bad O/C

 

[leemanuel]

thanks for that, just so im not being thick... is the cps the coil pack?
am gonna change the plugs and air filter as cant do any harm.

odd thing is if the car struggles to start if i push the accelerator right down on the second key turn it fires straight up?? runs spot on otherwise

 

[television]

thanks for that, just so im not being thick... is the cps the coil pack?
am gonna change the plugs and air filter as cant do any harm.

odd thing is if the car struggles to start if i push the accelerator right down on the second key turn it fires straight up?? runs spot on otherwise

Then this fault is not coils or CPS (crankshaft position sensor)

 

[television]

jimsinessex is very good with these cars,,could it be the breather

http://forums.mercedesclub.org.uk/showthread.php?t=41576

 

[leemanuel]

ah could be good then as they both sound expensive

thanks for the advice

 

[leemanuel]

HI again,

i dont seem to have the breather on mine could that be due to me not having the Kompressor engine?

went to the car this morning pumped the accelerator pedel twice and the car fired up straight away?? could it be something as simple as muck in the tank??

 

[jibcl500]

You shouldnt press the gas pedal while starting a merc, Im assuming yours is a 320 petrol not diesel? what MAF did you buy a gen from mercedes or cheap cheap from ebay.

jib

 

[leemanuel]

yeah thats what i thought it seems really odd.

the MAF is a Bosch one from Merc - could it be anything to do with the air filter maybe?

 

[leemanuel]

yeah thats what i thought it seems really odd.

the MAF is a Bosch one from Merc - could it be anything to do with the air filter maybe?

sorry yes its a 320 petrol clk

 

[leemanuel]

ok have just tried starting and not touching the accelerator.

struggled on the first two turns then fired up fine on the third
switched off and tried again and fired up straight away
swithched off again and tried and it struggled then fired up on the second turn.

tick over and running is absolutly spot on its just starting that can be a problem.

all help is really appreaciated

 

[jibcl500]

So when was it last serviced, new plugs filter etc, have you checked the plugs, theres 12 on your engine, takes about an hour to remove and replace them. MB retail about £90 for the plugs so easily never changed.

Have you had anything else done to the car recently, new exhaust ?? Has your engine been power washed steam cleaned recently?

What mileage ?
Any fuel additives?

jib

 

[leemanuel]

hi,

its done 56k and is a 2001 not had any work done to it and no fuel aditives added. last service was at 51 but was abouta year ago.
i changed the fuel filter last weekend and will pop a new air filter and maybe some redex in tomorrow.

could the spark plugs be the problem then with it being a starting issue?